Halakha Mazmur 85:14: Mishneh Torah, Prayer and the Priestly Blessing & Kitzur Shulchan Arukh

It is forbidden to take any refreshment or do any work after daybreak, till the morning service has been recited. Nor should a visit be paid, early in the morning, to a neighbour's home, to greet him, before the morning service has been recited. Nor should one set out on a journey before praying. But refreshment may be taken before reciting the additional service or the afternoon service. A meal however must not be taken, close to the hour for reading the afternoon service.

As soon as the day dawns, when a ray of light shines from the sun in the east, since this begins the time when prayers may be said, (for if you had prayed then, your obligation, would have been fulfilled) it is forbidden to begin work or indulge in your affairs¹Spiritual affairs involving Torah and Mitzvos are permitted before prayers. or set forth on a trip²In extreme circumstances it is permissible to pray while traveling. before praying, as it is said: "Righteousness will precede him and he will set his footsteps upon the way."³Psalms 85:14. "Righteousness" refers to prayer for we declare the righteousness of our Creator, and then afterwards we may set our footsteps on the road to our personal endeavors.

Before departing on a journey, you should give charity, for it is said: "Righteousness will precede him and he will set his footsteps upon the way."¹⁰Psalms 85: 14. In Hebrew tzedek, also means charity. You should take leave from the leaders of the city¹¹I.e., the righteous scholars. that they may bless you with success on your journey. You should endeavor that some people escort you.¹²I.e., to the edge of the city. When escorting a friend, and when taking leave of him, you should remain standing in your place until the traveller disappears from view. Those who bless the traveler should not say to him: "Go in peace," but, [rather,]: "Go towards peace;" because David said to Absalom:¹³Samuel II 15: 9. "Go in peace." He went and was hung, whereas Yisro said to Moshe:¹⁴Exodus 4: 18. "Go towards peace," and he [Moshe] rose to success. While traveling, you should be occupied with Torah study, for it is said:¹⁵Deut. 6: 7, 11: 9. "And when you travel on the road."¹⁶“Speak them (the words of Torah)… when you journey …” You should also recite some Psalms each day with concentration and humility. You should take care to take along bread even when traveling to a nearby destination. You should also take along tzitzis lest a tzitza become invalid and being unable to obtain another, you will remain idle from [fulfilling] a mitzvah.¹⁷It is preferable that on a trip, even to a nearby destination, you should take your tallis and tefillin along (Mishnah Berurah 110). "A person should always arrive when it is good and depart when it is good,"¹⁸Pesachim 2a. that is, when traveling to an inn towards evening, you should arrive while the sun is still shining, and the following day you should wait until the sunrise and [then] depart, and then things [will be] well for you, as is written: "God saw the light that it was good."¹⁹Gen. 1: 4. You should not overeat while on a journey.